• MESO: Mesoscale Discussion 1964

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Mon Dec 6 08:48:02 2021
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    ACUS11 KWNS 060847
    SWOMCD
    SPC MCD 060847=20
    KYZ000-TNZ000-ILZ000-MOZ000-061015-

    Mesoscale Discussion 1964
    NWS Storm Prediction Center Norman OK
    0247 AM CST Mon Dec 06 2021

    Areas affected...southwestern Kentucky

    Concerning...Tornado Watch 551...

    Valid 060847Z - 061015Z

    The severe weather threat for Tornado Watch 551 continues.

    SUMMARY...Local risk for severe weather -- mainly in the form of
    gusty/damaging winds -- will continue over the next couple of hours.
    As WW 551 nears its scheduled 10Z expiration, new/downstream WW
    issuance is not anticipated.

    DISCUSSION...Latest radar loop shows a frontal band of convection
    moving across northern and western Kentucky at this time. The
    strongest storms within the broader bend exist within in a short
    segment about to cross the Mississippi River from far southeastern
    Missouri and into far western Kentucky.

    Ahead of the frontal band, a secondary, loosely organized zone of
    pre-frontal convection is indicated. Ahead of the front across
    Kentucky, a seasonally moist boundary layer (dewpoints in the mid
    50s to near 60) is contributing to modest, slightly elevated CAPE
    (at or below 500 J/kg), which will support continuation of
    convection near and ahead of the front through the morning.

    However, given the aforementioned, weakly stable boundary layer, and
    flow aloft aligned roughly along the front/convective band, severe
    potential should continue to remain limited/local. As such, current indications are that WW 551 can be allowed to expire at 10Z, with a
    new WW not required to cover very limited, lingering severe risk.

    ..Goss.. 12/06/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!p9Wik5LKD3oExcY0foyRM2GeWdhjxYG1h-9EW8O1zk_3TXGeVFGdlUfXvrI9tcdd1HeDZ4Ev$=
    for graphic product...

    ATTN...WFO...LMK...OHX...PAH...MEG...

    LAT...LON 36548970 37058916 37548733 37238695 36798706 36398930
    36548970=20



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